From 2024bf0bcf75b770354343929e2c5dcdc36727be Mon Sep 17 00:00:00 2001
From: Ben Gras <ben@minix3.org>
Date: Thu, 11 Dec 2008 14:49:17 +0000
Subject: [PATCH]  . no more HZ  . let user processes query HZ  . no more
 custom panic()

---
 servers/pm/glo.h     |  1 +
 servers/pm/main.c    |  2 ++
 servers/pm/misc.c    |  7 ++++---
 servers/pm/signal.c  |  6 +++---
 servers/pm/time.c    |  6 +++---
 servers/pm/utility.c | 21 ---------------------
 6 files changed, 13 insertions(+), 30 deletions(-)

diff --git a/servers/pm/glo.h b/servers/pm/glo.h
index 6485c1679..b9adae444 100644
--- a/servers/pm/glo.h
+++ b/servers/pm/glo.h
@@ -26,6 +26,7 @@ EXTERN sigset_t ign_sset;	/* which signals are by default ignored */
 EXTERN time_t boottime;		/* time when the system was booted (for
 				 * reporting to FS)
 				 */
+EXTERN u32_t system_hz;		/* System clock frequency. */
 EXTERN int report_reboot;	/* During reboot to report to FS that we are 
 				 * rebooting.
 				 */
diff --git a/servers/pm/main.c b/servers/pm/main.c
index 8f603a7b9..208dca355 100644
--- a/servers/pm/main.c
+++ b/servers/pm/main.c
@@ -342,6 +342,8 @@ PRIVATE void pm_init()
 #endif  
 
  if(f > 0) printf("PM: failed to register %d processes with DS.\n", f);
+
+ system_hz = sys_hz();
 }
 
 /*===========================================================================*
diff --git a/servers/pm/misc.c b/servers/pm/misc.c
index 4e380cc58..77d4ff239 100644
--- a/servers/pm/misc.c
+++ b/servers/pm/misc.c
@@ -72,9 +72,6 @@ PUBLIC int do_allocmem()
 	r = vm_allocmem(m_in.memsize, &retmembase);
 	if(r == OK)
 		mp->mp_reply.membase = retmembase;
-#if 0
-	printf("PM: do_allocmem: %d\n", r);
-#endif
 	return r;
 }
 
@@ -282,6 +279,10 @@ PUBLIC int do_getsysinfo_up()
         src_addr = (vir_bytes) &loadinfo;
         real_len = sizeof(struct loadinfo);
         break;
+  case SIU_SYSTEMHZ:
+        src_addr = (vir_bytes) &system_hz;
+        real_len = sizeof(system_hz);
+	break;
   default:
   	return(EINVAL);
   }
diff --git a/servers/pm/signal.c b/servers/pm/signal.c
index db3f288ad..23c2cb4d1 100644
--- a/servers/pm/signal.c
+++ b/servers/pm/signal.c
@@ -325,7 +325,7 @@ int sec;			/* how many seconds delay before the signal */
   	if ( (s=getuptime(&uptime)) != OK) 
   		panic(__FILE__,"set_alarm couldn't get uptime", s);
   	exptime = *tmr_exp_time(&mproc[proc_nr_n].mp_timer);
-  	remaining = (int) ((exptime - uptime + (HZ-1))/HZ);
+  	remaining = (int) ((exptime - uptime + (system_hz-1))/system_hz);
   	if (remaining < 0) remaining = 0;	
   } else {
   	remaining = 0; 
@@ -347,8 +347,8 @@ int sec;			/* how many seconds delay before the signal */
    * this be declared properly without combinatorial explosion of message
    * types?
    */
-  ticks = (clock_t) (HZ * (unsigned long) (unsigned) sec);
-  if ( (unsigned long) ticks / HZ != (unsigned) sec)
+  ticks = (clock_t) (system_hz * (unsigned long) (unsigned) sec);
+  if ( (unsigned long) ticks / system_hz != (unsigned) sec)
 	ticks = LONG_MAX;	/* eternity (really TMR_NEVER) */
 
   if (ticks != 0) {
diff --git a/servers/pm/time.c b/servers/pm/time.c
index fe59cd676..2bbb28406 100644
--- a/servers/pm/time.c
+++ b/servers/pm/time.c
@@ -29,8 +29,8 @@ PUBLIC int do_time()
   if ( (s=getuptime(&uptime)) != OK) 
   	panic(__FILE__,"do_time couldn't get uptime", s);
 
-  mp->mp_reply.reply_time = (time_t) (boottime + (uptime/HZ));
-  mp->mp_reply.reply_utime = (uptime%HZ)*1000000/HZ;
+  mp->mp_reply.reply_time = (time_t) (boottime + (uptime/system_hz));
+  mp->mp_reply.reply_utime = (uptime%system_hz)*1000000/system_hz;
   return(OK);
 }
 
@@ -51,7 +51,7 @@ PUBLIC int do_stime()
   }
   if ( (s=getuptime(&uptime)) != OK) 
       panic(__FILE__,"do_stime couldn't get uptime", s);
-  boottime = (long) m_in.stime - (uptime/HZ);
+  boottime = (long) m_in.stime - (uptime/system_hz);
 
   s= sys_stime(boottime);		/* Tell kernel about boottime */
   if (s != OK)
diff --git a/servers/pm/utility.c b/servers/pm/utility.c
index 405c7fdc8..ef751582d 100644
--- a/servers/pm/utility.c
+++ b/servers/pm/utility.c
@@ -63,27 +63,6 @@ PUBLIC int no_sys()
   return(ENOSYS);
 }
 
-/*===========================================================================*
- *				panic					     *
- *===========================================================================*/
-PUBLIC void panic(who, mess, num)
-char *who;			/* who caused the panic */
-char *mess;			/* panic message string */
-int num;			/* number to go with it */
-{
-/* An unrecoverable error has occurred.  Panics are caused when an internal
- * inconsistency is detected, e.g., a programming error or illegal value of a
- * defined constant. The process manager decides to exit.
- */
-  printf("PM panic (%s): %s", who, mess);
-  if (num != NO_NUM) printf(": %d",num);
-  printf("\n");
-   
-  /* Exit PM. */
-  sys_exit(SELF);
-}
-
-
 /*===========================================================================*
  *				find_param				     *
  *===========================================================================*/
-- 
2.44.0